Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

Vehicle ON, observe the scan tool ECM Engine Coolant Temperature (ECT) parameter in freeze frame data.
Verify the Engine Coolant Temperature parameter was below 125°C (257°F) when the DTC set.
- If the ECT was 125°C (257°F) or greater when the DTC set
  Refer to Symptoms - Engine Cooling and correct that concern first.
- If the ECT was below 125°C (257°F) when the DTC set
Inspect for proper coolant level in the hybrid cooling system reservoir.
- If coolant level is low
  Refer to Hybrid Cooling System Loss of Coolant .
- If coolant level is OK
Inspect the hybrid/EV cooling system radiator for debris or obstruction.
- If a concern is found
  Repair or replace the restricted or damaged components as necessary.
- If no concern is found
Inspect for proper operation of all hybrid/EV system coolant pumps.
- If a concern is found
  Repair or replace the coolant pumps as necessary.
- If no concern is found
Verify the G10 Cooling Fan Motor activates when A/C is On.
NOTE: A slight delay may occur before the cooling fan activates.
- If the cooling fans do not operate
  Refer to Cooling Fan Inoperative (LFV or LKN)Cooling Fan Inoperative (LTG) .
- If the cooling fans operate
All OK.